Process of manufacturing spinning fibers



4 No Drawing.

Pat nted 7 Aug. 18 d 19 25. I

I UNITED STATES PAT-KENT. OFFICE.

/ LEO UIB BELOHDE, 0F KARLSRUHE BADEN, GERMANY."

' rnocnss or MANUFACTURING srmnrne FIBERS.

To all whom it @h em I Be it known that I, LEO UBBELOHDE, a citizen of Germany, residing at Karlsruhe, Ba-

process. .for spinning. purposes, even when den, whose post-oflice address is Wendtstrasse.

11, Karlsruhe, Baden, Germany, have in-' vented certain new and useful Processes of Manufacturing Spinning Fibers, of

which the following is a specification.

This invention has reference-to fibersfor spinning purposes and to ajprocess of ob- "taining the same, and it is particularly intended to improve the conditions and process of manufacture of such fibers. There. is

intended to better adapt such fibrous mate rial for "spinning purposes by providin a roughening of the surface combined wit a breaking and twisting of the fibers. This object is accomplished by treating the fibers in the wet or dry condition,- and by means of suitable agitating, grinding and centrifugal means with hard, chip-like sharp edged mamay be used over again.

terial'the longitudinal extension .of'which is greatly below the length of the fibers themselves, such as powder, infusorial earth and the -like. The treatment may for instance be effected in centrifugal mills, carding and opening means and the like. By means of the sharp edges of the granules of the material the fibers are broken and twisted and are superficially roughened. :After the treatment the sharp edged material may be eliminated'and It has also been ascertained that in the case of particularly rapid beatin machines the action is greatly assisted an increased by employing a partial or complete vacuum,

in admixsharp edged granular powderous'material lass powder, carborundum Application filed August 2, 1922. Serial -'1...579', ao7.

because under the action, of thewacuum the impingingof the fibers againstfthe parts of machinery and' the striking. of the sharp edged material against the fibers is more 1ntense and more violent. It is therefore preferable to work the process at low pressure or in the vacuum.

. My invention may be carried out in various ways and by the use of a great variety of different: pieces of apparatus and methods, andit is susceptible of alterations'and modifications to conform to existing conditions, and to better adapt it to the requirements of manufacture and to the convenience of the operator, and without deviating from the spirit of my invention the scope of which is defined by the claims as hereunto appended. -I'claim:-T f..

' 1. The process of increasin the spinning qualities of vegetable fibers o inferior spining qualities which consists in treating said fibers for some time with hard chip-like the extension of which in the longitudinal direction is far below the length of the fibers, .and then removing such. material from the fibers.

2..The process of increasing the spinning qualities of wood pulp, .cottonized' fibers I from linen straw, flax, hemp and other fibers of inferior spinning qualities, which conslsts in treating such fibers with mineral sharp' edged, substantially finely granular mater al.

properties of fibers of'compar'atively inferior spinning qualities whichv consists in treating said fibers under reduced pressure with sharp edged finely' granular material of a size greatly below the length of said fibers. and then removing said material from said fibers.

4. The process of increasing the spinning qualities of fibrous material, which consists in treating such materialwith sharp edged. granulated chi -like material, andthen sep aratingthe di each other.

5. The process of treating vegetable fibers.

of inferior spinning qualities, which conerent' kinds of material from 3. The. process of increasing the spinning sists-in treating said material with sharp edged lass powder.-

of inferior spinning qualities, which con- 5 sists in treatingsaid fibers with sharp edged glass powder under reduced pressure.

7 As a new article of manufacture superficially roughened spinning fibers produced a 6. The process of treating vegetable fibers by treatment with chip-like, hard granu latedmaterial. r

8. Vegetable artificially roughened spinning material consisting of fibers artificially roughened by treatment with sharp edged finely granular material.

In testimony whereof I afiix my si ature.

LEO UBBELO E. 

